diff options
Diffstat (limited to 'engine/battle/core.asm')
| -rwxr-xr-x | engine/battle/core.asm | 115 |
1 files changed, 61 insertions, 54 deletions
diff --git a/engine/battle/core.asm b/engine/battle/core.asm index 94a2c518..67eeb2ff 100755 --- a/engine/battle/core.asm +++ b/engine/battle/core.asm @@ -280,7 +280,7 @@ Func_3c11e: ; 3c11e (f:411e) jr nc, .asm_3c1a0 ld b, $ff .asm_3c1a0 - call GenRandom + call Random cp b jr nc, .asm_3c14f jr asm_3c202 @@ -475,12 +475,12 @@ MainInBattleLoop: ; 3c233 (f:4233) ld a, [$ffaa] cp $2 jr z, .invertOutcome - call GenRandomInBattle + call BattleRandom cp $80 jr c, .playerMovesFirst jr .enemyMovesFirst .invertOutcome - call GenRandomInBattle + call BattleRandom cp $80 jr c, .enemyMovesFirst jr .playerMovesFirst @@ -1595,7 +1595,7 @@ Func_3cab9: ; 3cab9 (f:4ab9) jr c, .asm_3cb5c jr .asm_3cb2b .asm_3cb39 - call GenRandomInBattle + call BattleRandom ld b, a ld a, [$ff98] cp b @@ -2992,7 +2992,7 @@ SelectEnemyMove: ; 3d564 (f:5564) callab AIEnemyTrainerChooseMoves .chooseRandomMove push hl - call GenRandomInBattle ; get random + call BattleRandom ld b, $1 cp $3f ; select move 1 in [0,3e] (63/256 chance) jr c, .moveChosen @@ -3415,7 +3415,7 @@ HyperBeamCheck: ; 3d8c2 (f:58c2) ld [$CC5B],a ld a,CONF_ANIM - 1 call PlayMoveAnimation - call GenRandomInBattle + call BattleRandom cp a,$80 jr c,.next3 ld hl,W_PLAYERBATTSTATUS1 @@ -3438,7 +3438,7 @@ HyperBeamCheck: ; 3d8c2 (f:58c2) ld hl,W_PLAYERMONSTATUS bit PAR,[hl] jr z,.next7 ; 5975 - call GenRandomInBattle ; random number + call BattleRandom cp a,$3F jr nc,.next7 ld hl,FullyParalyzedText @@ -3526,7 +3526,7 @@ HyperBeamCheck: ; 3d8c2 (f:58c2) ld hl,W_PLAYERBATTSTATUS1 res 1,[hl] set 7,[hl] - call GenRandomInBattle ; random number + call BattleRandom and a,3 inc a inc a @@ -3984,14 +3984,14 @@ Func_3dc88: ; 3dc88 (f:5c88) cp d jp nc, Func_3ddb0 .asm_3dcdf - call GenRandomInBattle + call BattleRandom swap a cp b jr nc, .asm_3dcdf cp c jp c, Func_3ddb0 .asm_3dceb - call GenRandomInBattle + call BattleRandom cp b jr nc, .asm_3dceb cp c @@ -3999,7 +3999,7 @@ Func_3dc88: ; 3dc88 (f:5c88) ld a, d sub c ld b, a - call GenRandomInBattle + call BattleRandom swap a sub b jr c, .asm_3dd0e @@ -4010,7 +4010,7 @@ Func_3dc88: ; 3dc88 (f:5c88) call PrintHurtItselfText jp Func_3ddb4 .asm_3dd0e - call GenRandomInBattle + call BattleRandom add a swap a and $7 @@ -4019,7 +4019,7 @@ Func_3dc88: ; 3dc88 (f:5c88) ld hl, BeganToNapText jr .asm_3dd3a .asm_3dd20 - call GenRandomInBattle + call BattleRandom and $3 ld hl, LoafingAroundText and a @@ -4079,7 +4079,7 @@ Func_3dc88: ; 3dc88 (f:5c88) ld a, [wCurrentMenuItem] ; $cc26 ld c, a .asm_3dd86 - call GenRandomInBattle + call BattleRandom and $3 cp b jr nc, .asm_3dd86 @@ -4606,7 +4606,7 @@ CriticalHitTest: ; 3e023 (f:6023) jr nc, .SkipHighCritical ld b, $ff .SkipHighCritical - call GenRandomInBattle ; generates a random value, in "a" + call BattleRandom ; generates a random value, in "a" rlc a rlc a rlc a @@ -4736,7 +4736,7 @@ ApplyAttackToEnemyPokemon: ; 3e0df (f:60df) ld b,a ; b = level * 1.5 ; loop until a random number in the range [1, b) is found .loop - call GenRandomInBattle ; random number + call BattleRandom and a jr z,.loop cp b @@ -4859,7 +4859,7 @@ ApplyAttackToPlayerPokemon: ; 3e1a0 (f:61a0) ; this differs from the range when the player attacks, which is [1, b) ; it's possible for the enemy to do 0 damage with Psywave, but the player always does at least 1 damage .loop - call GenRandomInBattle ; random number + call BattleRandom cp b jr nc,.loop ld b,a @@ -5090,7 +5090,7 @@ MetronomePickMove: ; 3e348 (f:6348) ld hl,wEnemySelectedMove ; loop to pick a random number in the range [1, $a5) to be the move used by Metronome .pickMoveLoop - call GenRandomInBattle ; random number + call BattleRandom and a jr z,.pickMoveLoop cp a,NUM_MOVES + 1 ; max normal move number + 1 (this is Struggle's move number) @@ -5385,7 +5385,7 @@ MoveHitTest: ; 3e56b (f:656b) .doAccuracyCheck ; if the random number generated is greater than or equal to the scaled accuracy, the move misses ; note that this means that even the highest accuracy is still just a 255/256 chance, not 100% - call GenRandomInBattle ; random number + call BattleRandom cp b jr nc,.moveMissed ret @@ -5494,7 +5494,7 @@ Func_3e687: ; 3e687 (f:6687) ld a, [hl] ld [$ff98], a .asm_3e69c - call GenRandomInBattle + call BattleRandom rrca cp $d9 jr c, .asm_3e69c @@ -5821,7 +5821,7 @@ Func_3e8fd: ; 3e8fd (f:68fd) ld [$cc5b], a ld a,CONF_ANIM call PlayMoveAnimation - call GenRandomInBattle + call BattleRandom cp $80 jr c, Func_3e9aa ld hl, W_ENEMYBATTSTATUS1 ; $d067 @@ -5884,7 +5884,7 @@ Func_3e9aa: ; 3e9aa (f:69aa) ld hl, W_ENEMYMONSTATUS ; $cfe9 bit 6, [hl] jr z, asm_3e9f6 - call GenRandomInBattle + call BattleRandom cp $3f jr nc, asm_3e9f6 ld hl, FullyParalyzedText @@ -5973,7 +5973,7 @@ asm_3e9f6: ; 3e9f6 (f:69f6) ld hl, W_ENEMYBATTSTATUS1 ; $d067 res 1, [hl] ; mon is no longer using thrash or petal dance set 7, [hl] ; mon is now confused - call GenRandomInBattle + call BattleRandom and $3 inc a inc a @@ -6062,9 +6062,9 @@ Func_3eb01: ; 3eb01 (f:6b01) ld a, $98 ld b, $88 jr z, .asm_3eb33 - call GenRandomInBattle + call BattleRandom ld b, a - call GenRandomInBattle + call BattleRandom .asm_3eb33 ld hl, $cff1 ld [hli], a @@ -6578,34 +6578,39 @@ Func_3ee94: ; 3ee94 (f:6e94) TerminatorText_3ee9a: ; 3ee9a (f:6e9a) db "@" -; generates a random number unless in link battle -; stores random number in A -GenRandomInBattle: ; 3ee9b (f:6e9b) + +BattleRandom: +; Link battles use a shared PRNG. + ld a, [W_ISLINKBATTLE] cp $4 - jp nz, GenRandom + jp nz, Random + push hl push bc ld a, [$ccde] ld c, a - ld b, $0 + ld b, 0 ld hl, $d148 add hl, bc inc a ld [$ccde], a - cp $9 + cp 9 ld a, [hl] pop bc pop hl ret c + push hl push bc push af + xor a ld [$ccde], a + ld hl, $d148 - ld b, $9 -.asm_3eec5 + ld b, 9 +.loop ld a, [hl] ld c, a add a @@ -6614,12 +6619,14 @@ GenRandomInBattle: ; 3ee9b (f:6e9b) inc a ld [hli], a dec b - jr nz, .asm_3eec5 ; 0x3eecd $f6 + jr nz, .loop + pop af pop bc pop hl ret + Func_3eed3: ; 3eed3 (f:6ed3) ld a, [H_WHOSETURN] ; $fff3 and a @@ -7089,7 +7096,7 @@ SleepEffect: ; 3f1fc (f:71fc) and a jr nz, .asm_3f242 .asm_3f231 - call GenRandomInBattle + call BattleRandom and $7 jr z, .asm_3f231 ld [de], a @@ -7145,7 +7152,7 @@ PoisonEffect: ; 3f24f (f:724f) jr nz, .asm_3f2d7 jr .asm_3f295 .asm_3f290 - call GenRandomInBattle + call BattleRandom cp b ret nc .asm_3f295 @@ -7253,7 +7260,7 @@ FreezeBurnParalyzeEffect: ; 3f30c (f:730c) sub a, $1e ;subtract $1E to map to equivalent 10% chance effects .next1 push af ;push effect... - call GenRandomInBattle ;get random 8bit value for probability test + call BattleRandom ;get random 8bit value for probability test cp b ;success? pop bc ;...pop effect into C ret nc ;do nothing if random value is >= 1A or 4D [no status applied] @@ -7305,7 +7312,7 @@ opponentAttacker: ; 3f382 (f:7382) sub a, $1e .next1 push af - call GenRandomInBattle + call BattleRandom cp b pop bc ret nc @@ -7571,7 +7578,7 @@ StatModifierDownEffect: ; 3f54c (f:754c) ld a, [W_ISLINKBATTLE] ; $d12b cp $4 jr z, .asm_3f572 - call GenRandomInBattle + call BattleRandom cp $40 jp c, Func_3f65a .asm_3f572 @@ -7580,7 +7587,7 @@ StatModifierDownEffect: ; 3f54c (f:754c) ld a, [de] cp ATTACK_DOWN_SIDE_EFFECT jr c, .asm_3f58a - call GenRandomInBattle + call BattleRandom cp SPLASH_EFFECT jp nc, Func_3f650 ld a, [de] @@ -7813,7 +7820,7 @@ BideEffect: ; 3f6e5 (f:76e5) ld [de], a ld [W_PLAYERMOVEEFFECT], a ld [W_ENEMYMOVEEFFECT], a - call GenRandomInBattle + call BattleRandom and $1 inc a inc a @@ -7832,7 +7839,7 @@ ThrashPetalDanceEffect: ; 3f717 (f:7717) ld de, $d06f .asm_3f728 set 1, [hl] ; mon is now using thrash/petal dance - call GenRandomInBattle + call BattleRandom and $1 inc a inc a @@ -7857,7 +7864,7 @@ SwitchAndTeleportEffect: ; 3f739 (f:7739) ld c, a inc c .asm_3f751 - call GenRandomInBattle + call BattleRandom cp c jr nc, .asm_3f751 srl b @@ -7899,7 +7906,7 @@ SwitchAndTeleportEffect: ; 3f739 (f:7739) ld c, a inc c .asm_3f7a4 - call GenRandomInBattle + call BattleRandom cp c jr nc, .asm_3f7a4 srl b @@ -7982,11 +7989,11 @@ TwoToFiveAttacksEffect: ; 3f811 (f:7811) cp ATTACK_TWICE_EFFECT ld a, $2 jr z, .asm_3f853 - call GenRandomInBattle + call BattleRandom and $3 cp $2 jr c, .asm_3f851 - call GenRandomInBattle + call BattleRandom and $3 .asm_3f851 inc a @@ -8017,7 +8024,7 @@ FlichSideEffect: ; 3f85b (f:785b) jr z, .asm_3f879 ld b, $4d ; ~30% chance of flinch .asm_3f879 - call GenRandomInBattle + call BattleRandom cp b ret nc set 3, [hl] ; set mon's status to flinching @@ -8124,11 +8131,11 @@ TrappingEffect: ; 3f917 (f:7917) ret nz call Func_3f9cf set 5, [hl] - call GenRandomInBattle + call BattleRandom and $3 cp $2 jr c, .asm_3f93e - call GenRandomInBattle + call BattleRandom and $3 .asm_3f93e inc a @@ -8151,7 +8158,7 @@ RecoilEffect: ; 3f951 (f:7951) jp Bankswitch ConfusionSideEffect: ; 3f959 (f:7959) - call GenRandomInBattle + call BattleRandom cp $19 ret nc jr Func_3f96f @@ -8179,7 +8186,7 @@ Func_3f96f: ; 3f96f (f:796f) jr nz, Func_3f9a6 set 7, [hl] ; mon is now confused push af - call GenRandomInBattle + call BattleRandom and $3 inc a inc a @@ -8265,7 +8272,7 @@ MimicEffect: ; 3f9ed (f:79ed) jr nz, .asm_3fa74 .asm_3fa17 push hl - call GenRandomInBattle + call BattleRandom and $3 ld c, a ld b, $0 @@ -8346,7 +8353,7 @@ DisableEffect: ; 3fa8a (f:7a8a) jr nz, .asm_3fb06 .asm_3faa8 push hl - call GenRandomInBattle + call BattleRandom and $3 ld c, a ld b, $0 @@ -8384,7 +8391,7 @@ DisableEffect: ; 3fa8a (f:7a8a) and a jr z, .asm_3faa8 .asm_3fae1 - call GenRandomInBattle + call BattleRandom and $7 inc a inc c |